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  1. R

    Batteries : rechargeable or not ?

    It's about batteries. I've bought a cheap green laser pointer from eBay, it is said to be 240mw (but I know it's not). It needs 2 AAA batteries, and I have some rechargeable ones. Since rechargeables are 550 mAh, do you think can I use them instead of regular AAAs ? Regards, Ray.
  2. R

    DIY "cheap" blue 20mw ?

    Hello. The beam combination of 405nm/20mw and 532nm/1mw would result in a 460nm/~21mw laser beam. The needed componants (bought separately) wouldn't cost more than a 20mw blue laser, no ? Ray.


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